Decaying warm dark matter and neutrino masses

Details Decaying warm dark matter and neutrino masses Decaying warm dark matter and neutrino masses

2007-05-16

arxiv.org/abs/0705.2406v2

Phys.Rev.Lett.99:121301,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. Replaced to match published version. Minor changes made to address referees' comments. References added

Scientific paper

10.1103/PhysRevLett.99.121301

Neutrino masses may arise from spontaneous breaking of ungauged lepton number. Due to quantum gravity effects the associated Goldstone boson - the majoron - will pick up a mass. We determine the lifetime and mass required by cosmic microwave background observations so that the massive majoron provides the observed dark matter of the Universe. The majoron DDM scenario fits nicely in models where neutrino masses arise a la seesaw, and may lead to other possible cosmological implications.

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